Tire-pump



R. C. HILTON.

TIRE PUMP. APPLICATION FILED MAR. 12, 1919.

lnyenTor. Roland C. Hilron by MSM7M AT Tys Patented Apr. 26, 1921.

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I'IILTQN, 0F TROY, NE'W SE-(33K, ASSIGNOE, BY DIRECT AND IMESNE ASSIGN- TO REESE-HILTON INC 03E TROY, NEW YURK, A. CORPORATION OF NE TIRE-FUMIP.

Specification of Letters Patent.

Fatented Apr. as, 1921.

Application filed March 12, 1919. Serial No. 282,137.

To all whom it may concern:

Be it known that l, liomnn C. HILTON, a citizen oi the United tates, residing at Troy, county of Rousselacr, of New York, have invented an lmmovement in Tire l umps, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to tire pumps for pumping up automobile tires and has for its object to provide a novel pump of this nature which can be readily clamped to the running board and which has various improved features, all as will be more fully hereinafter set forth.

In order to give an understanding of my invention, l have illustrated in the drawings a selected embodiment thereof which will now be described, after which the novel features will be pointed outin the appended claims.

In the drawings, Figure l is a side view with a part broken out of a pump embodyin my invention;

Tig. 2 is a top plan view;

Fig. 8 is a section on the line 83, Fig. 1;

Fig. l is a reduced view of the pump;

Fig. 5 is a section on the line 55, 1;

Fig. 6 is a side view of the joint between the sections of the handle;

Fig. 7, is a section on the line 7--'(, Fig.

The pump casing comprises a cylinder l and two head or end members 2 and 3 between which the cylinder is'situated. The cylinder 1 may conveniently be made from a piece of tubing and it is shown as clamped between the heads or end members 2 and 3 by means of tie rods 4 Each head or end member is provided with a toot 5 adapted to rest on the running board 80, and each foot has a clamp 6 associated therewith by which it may be clamped to the winning; board. These clamps are preferably hinged to the feet, each clamp having the ar 7 which is pivotally mounted in the flange portion 8 of he foot, and the arm 28 which extends under the running board and carries the usual clamping screw 9. By pivotally connecting the clamps to the feet, said clamps can be folded up against the cylinder when the pump is not in use.

Situated within the cylinder is a piston 10 which will preferably be of the usual cup washer type. This piston is carried by a piston rod ll which projects through the head or end 3. 12 indicates an operating leverwhich is pivotally connected to the projecting end of the piston rod, as shown at 13. The lower end of: the operating lever is pivotally connected at 14 to a pair of link members 15 that are pivotally connected to the head 2 at 16, said link members being situated on either side of the cylinder. The head or end 3 is provided with an air inlet opening 17 and the head or end 2 is provided with a valved connection 18 to which a discharge pipe 19 is secured. This valved connection 18 is provided with an outwardly-opening check valve 20 adapted to seat against a valve seat 21.

With the above-described construction a vibrating movement of the lever 12 will operate to vibrate the piston 10 in the cylinder 1, and during each stroke of the piston to the right air will be drawn past the piston into the left-hand end of the cylinder, and during the stroke of the piston to the left, this air will be forced through the discharge valve into the discharge pipe 19. The links 15 serve as a fulcrum to which the lever 12 is pivoted and because they are pivoted to the pump casing they also allow for the vertical movement of the lower end of the lever, thus preventing any binding of the parts. i

The lever 12 is so shaped that when it is depressed into the dotted line position, 1, thereby to force the piston to the extreme limit oi its compression stroke, the pivot 14; comes substantially into alinement with the )iston rod ll. The lever connection therel tore, constitutes a toggle device which is straightened when the piston is at the end of its compression stroke, and hence the greatest power is developed at this point. in operating; the pump, the resistance which the compression of the air offers to the piston is the greatest as the piston nears the end of its compression stroke and my arrangement, therefore, has the advantage that the greatest power will be developed at the point in the stroke where the greatest resistance is offered to the movement of the piston.

I have herein illustrated the lever 12 as provided with an extension 22 thereby to afford a better leverage. This extension 22 is movably secured to the lever so that it can be folded back into the dotted line position Fig. 4; when the pump is to be stored. To provide for this movable or adjustable connection between the lever and the lever extension, I have made the lever with the transVersely-exttending groove 23 at its outer end in which groove is a rib 2*. formed on the inner end of the extension 22. The meeting ends of the lever and etctension 22 are clamped together by means of a clamping bolt 25, said bolt holding the rib 2% in the groove 23. liy partiell" unscrewing the nut 26 on the clamp] bol we extension 22 may be folded. back o must the lever 12, thus reducing' considerably the space required for storing the pump.

It Will be noted that the pump casing is clamped firmly to the runnii board 3( and, therefore, the cylinder of the pump is held rigidly in position during the pumping operatlon.

I claim:

1. In a pump, the combination with a pump casing comprising a cylinder element and two heads or end members between which the cylinder is clamped, each end member having foot to rest on a support, of a clamp pivotally connected to each foot and by which said pump casing c mped to said su port, each cla l ivoted to sump; about an axis ending:

transversely to the eylimler, a piston operating in said cylinder, and means to actuate said piston. V

2. In a pump, the combin pump casing com e ling eyl and two heads or e. fl memb s, cl otally eonneeted to each swing about an exis t inder, each clamp bei of a size to pULfli it be swung against the cylinder bet the end members, a piston in said cylinder, and means to actuate it.

In testimony whereof, name to this specification.

ROLAND O l-llLlUN.

I have signed my 

